Mohamed Yusoff Ismail
Institute of Southeast Asia Studies , 1993
Buku Teks SO
edited by Heinz Bechert
Vandenhoeck & Ruprecht, 1978
Buku Teks SO
Chang, Garma C.C.
The Pennsylvania State University Press, 1971
Buku Teks SO
Soka Gakkai,, 2002
Buku Referensi
edited by David W. Chappell
University of Hawaii Press, 1987
Buku Teks SO